Currently globalization forces companies to design e-commerce strategies as a competitive factor, This involves the development of complex models that IT can help build. This article is a proposal based on the paradigm of Model Driven Architecture (MDA), describes a metamodel Ecommerce that supports the development of a web application. This application ensures semantic interoperability, which is achieved with the definition of Ontology and technical interoperability, which is achieved with the migration of data from the applicative to other e-commerce platforms. This is possible thanks to a generator that access to repositories of information and facilitates the migration of data from the e-commerce website to other platforms. In this way reduce the complexity and minimizing the efforts for the creation and maintenance of e-commerce solutions